File: deopt-intrinsic.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (20 lines) | stat: -rw-r--r-- 600 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
; RUN: opt < %s -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s

declare i32 @llvm.experimental.deoptimize.i32(...)

define i32 @test1(i32 %a, i32 %b) {
; CHECK-LABEL: Printing analysis {{.*}} for function 'test1':
entry:
  %cond = icmp eq i32 %a, 42
  br i1 %cond, label %exit, label %deopt

; CHECK:  edge %entry -> %exit probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
; CHECK:  edge %entry -> %deopt probability is 0x00000000 / 0x80000000 = 0.00%

deopt:
  %rval = call i32(...) @llvm.experimental.deoptimize.i32() [ "deopt"() ]
  ret i32 %rval

exit:
  ret i32 %b
}